{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "746744982",
    "entityType": "User",
    "nonce": "0xd2efd16b717d377dbd6cfe278b42965c3f283f23ce1848378c2f3f8c9f2fa3e0",
    "signature": "0x978fec54bbf6baa3b54e45f2c24d357a5318e8ce64eae3e7fccd48b8f36eb7c4066644249f31794c897e0aea5a2dd019184cd7f179025d9381d48f245795d37d1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}